Social Media MCP Server for AI Agents — ReplyNodes

Social media MCP server for AI agents

The ReplyNodes MCP server gives AI agents standardized tools for social publishing: schedule and publish posts, manage channels and groups, generate and upload media, and run approval-aware workflows — all through the Model Context Protocol.

ReplyNodes is social media infrastructure for AI agents and applications. One remote MCP server at app.replynodes.com/api/mcp works across every connected social network, so agents don't need a separate integration per platform.

Technical details: integration evidence

ChatGPT uses GPT Actions calling the REST API. It is not an MCP client. MCP clients use the remote MCP server. API keys are created in the app at Developers → API Keys & Agents (/developers).

Client, protocol, endpoint, authentication, and setup matrix
Client	Protocol	Endpoint	Auth	Setup
ChatGPT	GPT Actions	https://app.replynodes.com/api/public/v1	Raw API key in Authorization (no Bearer), or pos_ OAuth app token	ChatGPT setup →
Claude, Claude Code, Cursor, Codex, OpenClaw, Hermes	Remote MCP	https://app.replynodes.com/api/mcp	Authorization: Bearer *** key, or MCP OAuth	MCP setup →
Applications and workflow tools	REST API	https://app.replynodes.com/api/public/v1	Raw API key in Authorization (no Bearer), or pos_ OAuth app token	REST API setup →

ChatGPT

Protocol: GPT Actions
Endpoint: https://app.replynodes.com/api/public/v1
Authentication: Raw API key in Authorization (no Bearer), or pos_ OAuth app token
Setup: ChatGPT setup →

Claude, Claude Code, Cursor, Codex, OpenClaw, Hermes

Protocol: Remote MCP
Endpoint: https://app.replynodes.com/api/mcp
Authentication: Authorization: Bearer *** key, or MCP OAuth
Setup: MCP setup →

Applications and workflow tools

Protocol: REST API
Endpoint: https://app.replynodes.com/api/public/v1
Authentication: Raw API key in Authorization (no Bearer), or pos_ OAuth app token
Setup: REST API setup →

How it works

Connect your MCP client

Point Claude Code, Cursor, Codex, VS Code, or another MCP-capable client at the remote server with your API key — or use the @replynodes/mcp bridge for stdio-only clients.

Agent discovers your channels

The agent calls integrationList and groupList to see connected social accounts and groups before doing anything else.

Schedule, publish, and trigger

The agent drafts and validates content against the channel's integrationSchema, schedules or publishes with integrationSchedulePostTool, and runs integration actions with triggerTool — all under your approval rules.

MCP tools

Tool	What it does
integrationList	List all connected social media integrations
groupList	List integration groups (channels)
integrationSchema	Get a channel's post rules and required fields before scheduling
integrationSchedulePostTool	Schedule or publish posts to specific integrations with timing and content
triggerTool	Execute integration-specific actions and triggers
generateImageTool	Generate AI images
generateVideoTool	Generate AI videos from scripts
generateVideoOptions	Get available video generation options
videoFunctionTool	Call specific video manipulation functions
uploadFromUrlTool	Upload media files from URLs

Tool availability depends on your connected integrations.

Security and authentication

The MCP server authenticates requests with a ReplyNodes API key as a Bearer token, or through MCP OAuth (endpoint: app.replynodes.com/api/mcp-oauth). The key grants access to your ReplyNodes organization and is only sent to app.replynodes.com — it is not transmitted anywhere else. Manage keys under the Developers page in the app (API Keys & Agents).

Frequently asked questions

What is a social media MCP server?

It's a Model Context Protocol server that exposes social publishing as tools an AI agent can call. ReplyNodes' MCP server provides tools for scheduling posts, managing connected channels, generating media, and running integration actions — so any MCP-capable agent can publish to social networks through one interface.

Which clients can connect to the ReplyNodes MCP server?

Any client that supports remote MCP servers, such as Claude Code, Claude.ai custom connectors, Cursor, VS Code with Copilot, and Codex. Clients that only support local (stdio) MCP servers can use the @replynodes/mcp bridge package, which forwards to the same remote server.

Can the MCP server publish without human approval?

ReplyNodes supports approval-aware workflows. You can configure posts to require human approval before publishing, or allow auto-publish per channel — the agent schedules, and your approval rules decide what goes live.

How do I get an API key for the MCP server?

Log in at app.replynodes.com, go to the Developers page in the app (API Keys & Agents), and create a key. The key is sent as a Bearer token only to app.replynodes.com — treat it like a password and rotate it if it leaks.